Marc Marquez eased to victory in the MotoGP Spanish Grand Prix to take a slender one-point lead in the world championship standings over race runner-up Alex Rins.  The Honda rider grabbed the holeshot from third on the grid and broke away a second clear of the pack by the tenth lap, with his gap instantly opening up to four seconds when Petronas SRT's Fabio Quartararo hit mechanical problems on lap 14.  Ducati's Andrea Dovizioso shot off the line and looked set to grab second, but was pushed slightly wide at the first turn by Marquez and dropped behind SRT duo Franco Morbidelli and poleman Quartararo. Morbidelli kept Marquez at arm's length for the opening...
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